B-Line Eaton series Type 3/3R ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$605.23
B-Line Eaton series Type 3/3R junction boxes, 8" height, 4" length, 6" width, 3R, Hinged cover, RTHC NK enclosure, Surface mounted, Small single door

B-Line Eaton series Type 3/3R junction boxes, 8" height, 4" length, 6" width, 3R, Hinged cover, RTHC NK enclosure, Surface mounted, Small single door

(No reviews yet) Write a Review

Model: 864 RTHC NK
Selected Model is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$605.23
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like
Eaton B-Line series Type 3/3R junction boxes, 8" height, 4" length, 6" width, NEMA 3R, Hinged cover, RTHC NK enclosure, Surface mounted, Small single door, No knockout, Embossed thru holes, Carbon steel

Manufacturer Resources

Product Specs

Certifications:
UL 50
Closure Type:
Formed top hinge
Country Of Origin:
United States
Cover Type:
Hinged
Finish Color:
Painted
Locking Provisions:
Padlock provision
Mounting Hole Details:
Embossed thru holes
Mounting Method:
Surface
Nema Rating:
3R
Product Height:
8 in
Product Length Depth:
4 in
Product Weight:
3 lb
Product Width:
6 in
Special Features:
Rain hood, removable cover
Wall Thickness:
16 gauge
Department:
Electrical
Product Model:
RTHC NK enclosure
Product Color:
ANSI 61 Grey
Product Style:
Small single door
Product Material:
Carbon steel

B-LINE 864 RTHC NK – Frequently Asked Questions

1) Can the B-Line 864 RTHC NK junction box be mounted outdoors?
Yes. The 864 RTHC NK is a NEMA Type 3R enclosure, which covers outdoor use against rain, sleet and snow, and it adds a rain hood over the door. Note 3R is a drip-proof rating, not a washdown or dust-tight one, so if the box will see hose-down or heavy airborne dust you want a Type 4 or 12 enclosure instead.
2) What are the actual box dimensions on the B-Line 864 RTHC junction box?
It measures 8 inches high, 6 inches wide and 4 inches deep, which is where the 864 designation comes from. At 3 lb it is a one-hand mount on a wall or strut.
3) Does this B-Line enclosure come with knockouts for conduit?
No. The NK in 864 RTHC NK means no knockouts, so the box ships blank and you punch your own conduit openings where the run actually lands. If you want factory knockouts, you need a KO version of the enclosure rather than this one.
4) How does the cover open and can it be locked?
The door is hinged on a formed top hinge and it has a padlock provision, so it swings open for service and takes a standard padlock or lockout hasp to secure it. The cover is also removable if you need the box completely open to pull wire.
5) What is the B-Line 864 RTHC NK made of and how is it finished?
Carbon steel at 16 gauge, painted ANSI 61 grey. That is the standard grey used across industrial control gear, so it matches existing panels and enclosures on most plant and utility installs. Being painted steel rather than stainless, it suits general outdoor and industrial locations rather than corrosive or coastal ones.
6) How does this junction box mount to a wall?
Surface mount, using embossed thru holes in the back of the box. The embossing keeps the mounting fasteners standing the box off the surface and the holes sealed against the 3R rating, so you fasten straight to the wall or strut without drilling new penetrations.
7) Is the B-Line 864 RTHC NK UL listed?
It is built to UL 50, the standard covering enclosures for electrical equipment. It is also made in the US.
8) Does a back panel come with the 864 RTHC NK?
The 864 RTHC NK ships as an empty single-door junction box with the hinged cover and rain hood. Any interior mounting panel, terminal blocks, or conduit hubs are separate items, so budget those into the order if you are landing devices inside rather than just splicing.
How fast can I get the B-LINE 864 RTHC NK delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the B-LINE 864 RTHC NK come with a warranty?
Absolutely. The B-LINE 864 RTHC NK is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the B-LINE 864 RTHC NK?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the B-LINE 864 RTHC NK from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!